Antiinflammatory and/or antiallergic composition
CA 2020474 C · Owner: Ohmori, Shinji · Inventors: Ohmori, Shinji; Ogata, Kazumi; Sakaue, Takahiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a useful antiinflammatory and/or antiallergic composition comprising a compound of the formula:, (see fig. I) (wherein R's are same or different and each means a hydrogen atom of lower alkyl group) or a pharmaceutically acceptable salt thereof as an active ingredient.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed July 5, 1990 and granted September 29, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 5, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 5, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.